JP2989412B2 - Tunnel junction segment and tunnel connection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment for a tunnel junction and a tunnel connection for lining a tunnel.
It is about the method.

[0002]

2. Description of the Related Art In recent years, a shield method has been frequently used in the construction of a subway or the like in an urban area in place of a digging method. When constructing a large section such as a subway station by such a shield method, the roof shield method,
Various construction methods, such as a bridge girder construction method and a circular multiple shield construction method, are used. However, all of these construction methods have a circular cross section of the tunnel, which causes various problems. In order to solve the above problem, the applicant of the present application has developed a method such as Japanese Patent Application No. 4-104039.

[0003] As shown in Fig. 9, a shield tunnel having a rectangular cross section is connected on the side, and a ground steel plate 30 is hung between shield tunnels 20 constructed in parallel and closely adjacent to each other. Is excavated, and reinforced concrete is lined in the excavation space 40 to connect the shield tunnels 20 to each other.

[0004]

However, in the above-mentioned construction method, it is necessary to hang the steel plate between the shield tunnels constructed in parallel, so that the tying work is very difficult. Was. The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a tunnel joining device capable of easily performing a work of passing a steel plate between shield tunnels constructed in parallel . Segment
And a tunnel connection method.

[0005]

Means for solving the above problems are as follows. Claim 1 is constructed in parallel and close to each other.
Used to join shield tunnels with rectangular cross sections
Segment, the length of the tunnel
The fastening part is opened along the direction, and the fastening part is opened.
The entrance is closed with a closing plate that can be broken by press-fitting of the retaining steel plate
It is characterized by having been done. Claim 2 is parallel and near.
Join a shield tunnel with a rectangular cross section constructed in contact
Segment that is used for
The insertion part of the steel plate is opened along the length of the tunnel.
When the front side of the steel plate insertion part is closed with tape,
Both are removable covers on the back side of the insertion part
Is provided with grease in the box.
It is characterized by being enclosed. Claim 3 is parallel.
Lining a segment in a tunnel with a rectangular cross section
At the top and bottom of the opposing surface of the tunnel,
A section with a steel plate insert along the length of the
Of building a shield tunnel by lining the cement
And the other tunnel
The steel plate over the steel plate insertion part of the
Before and after passing the steel plate up and down between the tunnels
The ground between the shield tunnels where the steel plate was hung
And a step of excavating.

[0006]

By inserting the steel plate from the inside of the shield tunnel into the steel plate insertion portion provided in the segment body, the steel plate can be easily bridged between the shield tunnels.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a segment according to a first embodiment of the present invention, FIG. 2 is a sectional view of the same, FIG. 3 (1) is a front view of a retaining steel plate insertion portion, and FIG. The front view with the part opened, (3) is a front view in which the buckled steel plate is inserted into the buckled steel plate insertion part, and (1) and (2) in FIG. 6 are the buckled steel plate between adjacent shield tunnels. FIG.

The segment 1 according to the first embodiment of the present invention is a steel segment, and has a flange 1a protruding from a peripheral surface thereof. The flange 1a has a bolt hole 1b for connecting the segments and a front surface. Yamadome steel plate insertion part 2
It has. An opening 3 is opened along the axial direction of the tunnel.
Are fitted and joined by bolts 5.

As shown in FIG. 3A, the bolt 5 communicates from the closing plate 4 to the reinforcing flange 4a and is temporarily fixed by a nut 5a. Therefore, as shown in (2) of the figure, by removing the nut 5a on the closing plate 4 side and pulling out the bolt 5, the closing plate 4 can be removed from the opening 3. Then, as shown in (3) of the figure, after the steel plate 6 is press-fitted into the ground through the opened opening 3, the gap is filled with mortar 7 and closed again.

FIG. 4 shows a segment 1 of the present invention.
The segments 1 of the present invention are bolted to each other and to the other segments 9. In addition, the segment 1 of the present invention is assembled at the upper and lower portions of the shield tunnel 8, so that the steel plate insertion portion 2 is continuously formed along the axial direction of the shield tunnel 8.

Next, the case where the shield tunnel 8 constructed by using these segments 1 is joined will be described. This is a rectangular shield excavator 10 as shown in FIG. 5, where tunnels are juxtaposed in parallel and close to each other between shafts drilled at appropriate intervals, and steel segments are wrapped there. Build 8. As shown in (1) of FIG. 6, the shield tunnel 8 is constructed by continuously covering the segment 1 of the present invention only on the facing surface of the tunnel 8 and covering the normal segment 9 for the rest. You.

When these shield tunnels 8 are constructed, the closing plate 4 of the buckling steel plate insertion portion 2 at the upper and lower portions of both tunnels 8 is removed to open the opening 3. The steel plate 6 is press-fitted from the opening 3 of one shield tunnel 8 to the opening 3 of the other shield tunnel 8 and bridged, and the opening 3 is closed with a mortar 7. Next, after spanning the steel plate 6 between the shield tunnels 8, the ground 11 is excavated from one shaft to the other. In this case, if necessary, the ground will be improved and the water will be stopped to improve the safety of the construction.

FIG. 6 (2) illustrates the joining in the case where one of the shield tunnels 8 constructed close to each other is small. In this case, by constructing a large shield tunnel 8 with the segments of the present invention, the steel plate 6 is bridged between the shield tunnels 8 in the same manner as described above, and one end of the steel plate 6 has a small shield. They are placed above and below the tunnel 8, respectively.

FIG. 7 is a sectional view of a segment of the second embodiment, in which the opening 3 is closed by a closing plate 4 which can be broken by press-fitting of a steel plate 6 and the closing plate 4 is closed by a main girder 12a. It is formed by reinforcing with. The closing plate 4 is formed of a plastic material, hard paper, or the like, and has a detachable main girder 1 inside.
2a, and the main girder 12a is also
2b. In the case of bridging the retaining steel plate 6, when the main girder 12a is removed and the retaining steel plate 6 is pressed from above the closing plate 4, the closing plate 4 is broken by the pressing force and pressed into the ground 11. You. Further, the other bridging of the ridged steel plate 6 is performed in the same manner as in the first embodiment.

FIG. 8 is a sectional view of the segment 1 of the third embodiment. The segment 1 is provided with a removable cover 14 inside the opening 3 in which the steel plate insertion portion 2 is closed with the tape 13. A box 15 is provided, and grease 16 is sealed in the box 15. The tape 13 and the grease 16 are for preventing penetration of the backing material,
The cover 14 of the box 15 is fixed with bolts 14a. When the steel plate 6 is to be wrapped around, the cover 14 is removed and the steel plate 6 is pressed into the box 15.
Press-fit. In addition, bridging of the other steel plate 6
It is bridged in the same manner as in the first embodiment.

[0016]

According to the present invention, since the segment main body is provided with a retaining steel plate insertion portion which is opened along the length direction of the tunnel,
Close to between sea Lido tunnel was constructed the YamaTome steel plate can be passed easily over.

Since the closing plate that can be broken by press-fitting the fastening steel plate is closed at the opening of the insertion portion of the fastening steel plate, the fastening steel plate can be easily inserted into the ground.

The insertion portion of the retaining steel plate is provided with a box provided with a removable cover inside the opening closed by the tape, and the box is filled with grease to prevent penetration of the backing material. It is possible to prevent the sliding and to easily slide the steel sheet pile.

[Brief description of the drawings]

FIG. 1 is a perspective view of a segment.

FIG. 2 is a sectional view of a segment.

FIGS. 3 (1) to (3) are partially omitted front views of an insertion portion of a retaining steel plate.

FIG. 4 is a perspective view of a shield tunnel.

FIG. 5 is a front view of the shield machine.

FIGS. 6 (1) and (2) are cross-sectional views of a shield tunnel that has been lining.

FIG. 7 is a cross-sectional view of an insertion portion of a ridged steel plate of a segment according to a second embodiment.

FIG. 8 is a cross-sectional view of a portion of the segment retaining steel plate insertion portion of the third embodiment.

FIG. 9 is a sectional view of a shield tunnel showing a conventional joining method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Segment 2 Insert part of steel plate 3 Opening 4 Closure plate 8 Shield tunnel 12a, 12b Main girder 13 Tape 14 Cover 15 Box 16 Grease

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toru Taniguchi 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Masahiro Nakagawa 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Yuji Tategawa 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Makoto Enkawa 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Masakazu Fukuwaka 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Corporation Tokyo headquarters (72) Inventor Takashi Hiramoto 2-3-2 Uchisaiwaicho, Chiyoda-ku Tokyo Tokyo headquarters (72) Inventor Hideyuki Kobayashi 2-3-2 Uchisaiwai-cho, Chiyoda-ku, Tokyo Kawasaki Steel Corporation Tokyo Main Office (72) Inventor Osamu Hashimoto 2-Uchisaiwai-cho, Chiyoda-ku, Tokyo No.2-3 Kawasaki Steel Corporation Tokyo Head Office (56) References JP-A-4-309693 (JP, A) JP-B-50-37448 (JP, B2) JP-B-55-44839 (JP, B2) (58) Field surveyed (Int.Cl. ⁶ , DB name) E21D 11/04 E21D 9/04 E21D 9/06 301

Claims (4)

(57) [Claims] 1. A rectangular cross-section constructed in parallel and close to
Segments used to join shield tunnels
Along the length of the tunnel
The mountain retaining steel plate insertion portion is opened, and the mountain retaining steel plate insertion portion is
Blocked by a closing plate that can be broken by press-fitting of a steel plate
A segment for a tunnel junction characterized by the following. 2. A rectangular cross section constructed in parallel and close to each other.
Segments used to join shield tunnels
Along the length of the tunnel
The steel plate insertion part is opened, and the front surface of the steel plate insertion part is opened.
Side is closed with tape, and the back of the
On the front side, a box with a removable cover is provided.
Grease is enclosed in the box.
For tunnel junction. 3. A tunnel having a rectangular cross section which is parallel and close to each other.
Lining the segment and facing the tunnel
At the top and bottom, along the length of the tunnel,
Lining the segment where the insertion part was provided and shielding ton
Tunnel construction process and insertion of steel plate at one tunnel
From the part to the other part of the tunnel
Hang the steel plate up and down between the shield tunnels
Spanning step and the shield over which the stake steel sheet is spanned
Excavating the ground between tunnels
And the tunnel connection method. 4. The method according to claim 3, wherein the steel plate is hung.
After the passing process, the buckled steel plate insertion part where the buckled steel plate is inserted
Connection method characterized by filling mortar into the surface
Law.